I am a theater actress and I met a guy in a play I am currently working on. We are both from the UK but because of the play we are working in Sydney. We have been working together for almost 7 months now and we get on really well. We have a lot in common and love hanging out together to the point that in our spare time he always sneaks into my apartment and we hang out (we have never had sex or anything like that he just comes over here all the time and we find something to do). He has been in a relationship for about 4 years so even though I was attracted to him I never tried anything because I didn't want to get involved in his relationship.
However, sometimes I feel like we spend too much time together that we even act like a couple. To the point that even our cast mates think there is something between us or that we are in a relationship because of how close we are. Sometimes he just has this behavior of hugging me, holding my hand, kissing my cheek and even talking to me as if we were a couple.
Is it possible that I am misunderstanding him?